Optinal
Juniper Power Supply JPSU-350-AC-AFO
EX4300 Power System
AC Power Supply in EX4300 Switches
The AC power supply in EX4300 switches is a hot-insertable and hot-removable field-replaceable unit (FRU): You can install it without powering off the switch or disrupting the switching function.
All the EX4300 switches that are powered by AC power supplies, except EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and EX4300-48MP-S switches are shipped with one AC power supply installed in the rear panel of the switches. EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and EX4300-48MP-S switches are not shipped with power supplies; you must order the power supplies separately.
NOTE:
EX4300 switches except EX4300-48MP and EX4300-48MP-S switches support 350 W, 715 W, and 1100 W AC power supplies. EX4300-48MP and EX4300-48MP-S switches support 715 W, 1100 W, and 1400 W AC power supplies.
CAUTION:
Do not mix:
AC and DC power supplies in the same chassis
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
Characteristics of an AC Power Supply
The AC power supplies for EX4300 switches are available in 350 W, 715 W, 1100 W, and 1400 W models. Figure 1 shows an AC power supply for EX4300 switches. The AC power supplies support Power over Ethernet (PoE+) in EX4300-24P, EX4300-24P-S, EX4300-48P, EX4300-48P-S, EX4300-48MP, and EX4300-48MP-S models.
AC Power Supply Airflow
Each power supply has its own fan and is cooled by its own internal cooling system.
Each power supply has a label AIR OUT (AFO) or AIR IN (AFI) on the faceplate of the power supply that indicates the direction of airflow in the power supply.